CN204346584U - Light change-over switch input wide region optical power detection apparatus - Google Patents
Light change-over switch input wide region optical power detection apparatus Download PDFInfo
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- CN204346584U CN204346584U CN201520008701.XU CN201520008701U CN204346584U CN 204346584 U CN204346584 U CN 204346584U CN 201520008701 U CN201520008701 U CN 201520008701U CN 204346584 U CN204346584 U CN 204346584U
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Abstract
The utility model discloses a kind of light change-over switch input wide region optical power detection apparatus.It comprises across resistance type photoelectric detective circuit (1), reference voltage generating circuit (2), scale operation amplifying circuit (3), comparator circuit (4), amplitude limiter circuit (5), multichannel analog signals selector switch (6), ADC detects and processing module (7), light signal is by being converted to the electric signal of respective amount across resistance type operational amplification circuit, scale operation is carried out by the scale operation amplifying circuit group be made up of operational amplifier with reference voltage generating circuit, obtain the residual value voltage with reference voltage, voltage signal to be detected enters comparator circuit simultaneously, corresponding residual value voltage is selected according to the signal of different gear, whole analog-to-digital signal is become to detect and processing module carries out Data Detection and after processing through ADC with selecting logical combination again, complete the detection of whole input range signal completely, the amplitude of variation of true recovering signal.
Description
Technical field
The utility model relates to automatization testing technique field, particularly a kind of light change-over switch input wide region optical power detection apparatus.
Background technology
At present, the input power range that existing smooth change-over switch power input detection technique can detect is divided into two gears: i.e.-10 ~+10dBm or+10 ~+24dBm, and the actual required laser power input range detected is between-15 ~+26dBm.Obviously, existing smooth change-over switch power input detection technique can not meet the actual required laser power input range detected; In addition, also there is following shortcoming in current existing smooth change-over switch power input detection technique:
1, when light change-over switch input optical power is from the range reception of-10 ~+24dBm, when entrant laser power is greater than 12dBm, corresponding laser sensor electric current increases, higher when converting corresponding magnitude of voltage to by sampling resistor, sometimes 5V voltage is far longer than, and most ADC detection voltage in the market can not be greater than 5V, ADC detection module not so will be caused to exceed higher limit, time serious, even cause ADC module damage.
2, the product on market segment exceeds higher limit for preventing sampled voltage, and take amplitude limiter, when voltage exceeds higher limit, this output saturation, cannot detect the signal amplitude changing value under high input state.
Utility model content
Technical problem to be solved in the utility model overcomes the deficiencies in the prior art, the light change-over switch input wide region optical power detection apparatus providing a kind of luminous power that can realize relative broad range to detect.
The technical scheme that the utility model adopts is: the utility model comprises across resistance type photoelectric detective circuit, reference voltage generating circuit, scale operation amplifying circuit, comparator circuit, amplitude limiter circuit, multichannel analog signals selector switch, ADC detection and processing module
Describedly comprise light collection element, integrated circuit and peripheral cell across resistance type photoelectric detective circuit, for converting light signal to electric signal;
Described reference voltage generating circuit comprises stabilivolt and multiple resistance, for generation of the reference voltage of circuit;
Described scale operation amplifying circuit comprises No. three amplifying circuits, and each amplifying circuit, by transport and placing device circuit composition, for the electric signal after opto-electronic conversion and reference circuit are done ratio signed magnitude arithmetic(al), obtains the residual value compared to reference voltage;
Described comparator circuit comprises three tunnels and compares discharge circuit, converts the magnitude of voltage of different gear to and reference voltage compares computing for the electric signal after opto-electronic conversion;
Described amplitude limiter circuit comprises six tunnel amplitude limiter circuits, and every road comprises resistance and stabilivolt, for limiting the output amplitude of operational amplifier;
Described multichannel analog signals selector switch is made up of integrated circuit, for selecting the path of signal determination electric signal according to voltage residual value and gear;
Described ADC detects and processing module is made up of integrated circuit, for transferring analog electrical signal to digital signal, is convenient to processing of circuit.
Further, the described output terminal across resistance type photoelectric detective circuit is connected with the input end of described scale operation amplifying circuit, the output terminal of described reference voltage generating circuit is connected with the input end of described comparator circuit, the output terminal of described scale operation amplifying circuit is connected respectively the input end of amplitude limiter circuit Zhong tri-tunnel amplitude limiter circuit, the output terminal of this three tunnels amplitude limiter circuit is connected with the corresponding end of described multichannel analog signals selector switch respectively, the output terminal of described comparator circuit is connected respectively the input end of Ling tri-tunnel amplitude limiter circuit in amplitude limiter circuit, the output terminal of this three tunnels amplitude limiter circuit all detects with described multichannel analog signals selector switch and described ADC and the corresponding end of processing module is connected, described multichannel analog signals selector switch detects with described ADC and processing module is connected.
The beneficial effects of the utility model are: in the utility model, light signal is by being converted to the electric signal of respective amount across resistance type operational amplification circuit, with the scale operation amplifying circuit group of reference voltage generating circuit by being made up of operational amplifier, carry out scale operation, obtain the residual value voltage with reference voltage, voltage signal to be detected enters comparator circuit simultaneously, so often organize the magnitude of voltage that operational amplification circuit exports different brackets, the magnitude of voltage of these different brackets is input to the signal behavior end of multichannel analog signals selector switch through amplitude limiter circuit, therefore, the signal value of multichannel analog signals selector switch all produces with selecting logic, the selection signal voltage that the residual value voltage produced by scale operation amplifying circuit group and comparator circuit produce enters into multichannel analog signals selector switch simultaneously, according to the corresponding residual value voltage of the signal behavior of different gear, the surplus of magnitude of voltage is now then obtained by multichannel analog signals selector switch, whole analog-to-digital signals is become again with selection logical combination, this composite signal is after ADC detects and processing module carries out Data Detection and process, the detection of whole input range signal can be reduced completely, the amplitude of variation of true recovering signal.The utility model also tool has the following advantages:
1. sensing range can independently adjust, and the scope with different magnitude selects the scale operation of different group to amplify and comparator circuit;
2. can in extremely wide input reference signal, post processing electric circuit can the change of true recovering signal, ensures accuracy of detection;
3. principle is simple, components selection simple general-purpose, and circuit working is stablized.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model it comprise across resistance type photoelectric detective circuit 1, reference voltage generating circuit 2, scale operation amplifying circuit 3, comparator circuit 4, amplitude limiter circuit 5, multichannel analog signals selector switch 6, ADC detects and processing module 7, describedly comprise light collection element and integrated circuit and peripheral cell across resistance type photoelectric detective circuit 1, for converting light signal to electric signal, described reference voltage generating circuit 2 comprises stabilivolt and multiple resistance, for generation of the reference voltage of circuit, described scale operation amplifying circuit 3 comprises No. three amplifying circuits, each amplifying circuit forms by transport and placing device circuit, for the electric signal after opto-electronic conversion and reference circuit are done ratio signed magnitude arithmetic(al), obtain the residual value compared to reference voltage, described comparator circuit 4 comprises three tunnels and compares discharge circuit, the magnitude of voltage of different gear is converted to and reference voltage compares computing for the electric signal after opto-electronic conversion, described amplitude limiter circuit 5 comprises six tunnel amplitude limiter circuits, every road comprises resistance and stabilivolt, for limiting the output amplitude of operational amplifier, described multichannel analog signals selector switch 6 is made up of integrated circuit, for selecting the path of signal determination electric signal according to voltage residual value and gear, described ADC detects and processing module 7 is made up of integrated circuit, for transferring analog electrical signal to digital signal, be convenient to processing of circuit.
The described output terminal across resistance type photoelectric detective circuit 1 is connected with the input end of described scale operation amplifying circuit 3, the output terminal of described reference voltage generating circuit 2 is connected with the input end of described comparator circuit 4, the output terminal of described scale operation amplifying circuit 3 is connected respectively the input end of amplitude limiter circuit 5 Zhong tri-tunnel amplitude limiter circuit, the output terminal of this three tunnels amplitude limiter circuit is connected with the corresponding end of described multichannel analog signals selector switch 6 respectively, the output terminal of described comparator circuit 4 is connected respectively the input end of Ling tri-tunnel amplitude limiter circuit in amplitude limiter circuit 5, the output terminal of this three tunnels amplitude limiter circuit all detects with described multichannel analog signals selector switch 6 and described ADC and the corresponding end of processing module 7 is connected, described multichannel analog signals selector switch 6 detects with described ADC and processing module 7 is connected.
In the present embodiment, achieve and still normally to detect in extremely wide scope lasing light input power and be worth change accordingly, and effectively ensure accuracy of detection.Light signal is by being converted to the electric signal of respective amount across resistance type operational amplification circuit 1, with the scale operation amplifying circuit group 3 of reference voltage generating circuit 2 by being made up of operational amplifier, carry out scale operation, obtain the residual value voltage with reference voltage, voltage signal to be detected enters comparator circuit 4 simultaneously, so often organize the magnitude of voltage that operational amplification circuit exports different brackets, the magnitude of voltage of these different brackets is input to the signal behavior end of multichannel analog signals selector switch 6 through amplitude limiter circuit 5, therefore, the signal value of multichannel analog signals selector switch 5 all produces with selecting logic.The selection signal voltage that the residual value voltage produced by scale operation amplifying circuit group 3 and comparator circuit 4 produce enters into multichannel analog signals selector switch 6 simultaneously, corresponding residual value voltage is selected according to the signal of different gear, the surplus of magnitude of voltage is now then obtained by multichannel analog signals selector switch 6, whole analog-to-digital signals is become again with selection logical combination, this composite signal is after ADC detects and processing module 7 carries out Data Detection and process, the detection of whole input range signal can be reduced completely, the amplitude of variation of true recovering signal.
The utility model can be applicable to light device field.
Claims (2)
1. a light change-over switch input wide region optical power detection apparatus, is characterized in that:
It comprises detects and processing module (7) across resistance type photoelectric detective circuit (1), reference voltage generating circuit (2), scale operation amplifying circuit (3), comparator circuit (4), amplitude limiter circuit (5), multichannel analog signals selector switch (6), ADC,
Describedly comprise light collection element, integrated circuit and peripheral cell, for converting light signal to electric signal across resistance type photoelectric detective circuit (1);
Described reference voltage generating circuit (2) comprises stabilivolt and multiple resistance, for generation of the reference voltage of circuit;
Described scale operation amplifying circuit (3) comprises No. three amplifying circuits, and each amplifying circuit, by transport and placing device circuit composition, for the electric signal after opto-electronic conversion and reference circuit are done ratio signed magnitude arithmetic(al), obtains the residual value compared to reference voltage;
Described comparator circuit (4) comprises three tunnels and compares discharge circuit, converts the magnitude of voltage of different gear to and reference voltage compares computing for the electric signal after opto-electronic conversion;
Described amplitude limiter circuit (5) comprises six tunnel amplitude limiter circuits, and every road comprises resistance and stabilivolt, for limiting the output amplitude of operational amplifier;
Described multichannel analog signals selector switch (6) is made up of integrated circuit, for selecting the path of signal determination electric signal according to voltage residual value and gear;
Described ADC detects and processing module (7) is made up of integrated circuit, for transferring analog electrical signal to digital signal, is convenient to processing of circuit.
2. smooth change-over switch input wide region optical power detection apparatus according to claim 1, it is characterized in that: the described output terminal across resistance type photoelectric detective circuit (1) is connected with the input end of described scale operation amplifying circuit (3), the output terminal of described reference voltage generating circuit (2) is connected with the input end of described comparator circuit (4), the output terminal of described scale operation amplifying circuit (3) is connected respectively the input end of amplitude limiter circuit (5) Zhong tri-tunnel amplitude limiter circuit, the output terminal of this three tunnels amplitude limiter circuit is connected with the corresponding end of described multichannel analog signals selector switch (6) respectively, the output terminal of described comparator circuit (4) is connected respectively the input end of Ling tri-tunnel amplitude limiter circuit in amplitude limiter circuit (5), the output terminal of this three tunnels amplitude limiter circuit is all with described multichannel analog signals selector switch (6) and described ADC detects and the corresponding end of processing module (7) is connected, described multichannel analog signals selector switch (6) is detected with described ADC and processing module (7) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520008701.XU CN204346584U (en) | 2015-01-07 | 2015-01-07 | Light change-over switch input wide region optical power detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520008701.XU CN204346584U (en) | 2015-01-07 | 2015-01-07 | Light change-over switch input wide region optical power detection apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN204346584U true CN204346584U (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520008701.XU Expired - Fee Related CN204346584U (en) | 2015-01-07 | 2015-01-07 | Light change-over switch input wide region optical power detection apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525267A (en) * | 2016-12-16 | 2017-03-22 | 山东金洲科瑞节能科技有限公司 | Bus type temperature measuring device |
| CN109061575A (en) * | 2018-09-07 | 2018-12-21 | 北京大汉正源科技有限公司 | A kind of laser radar reception circuit |
-
2015
- 2015-01-07 CN CN201520008701.XU patent/CN204346584U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525267A (en) * | 2016-12-16 | 2017-03-22 | 山东金洲科瑞节能科技有限公司 | Bus type temperature measuring device |
| CN106525267B (en) * | 2016-12-16 | 2023-08-01 | 山东金洲科瑞节能科技有限公司 | Bus type temperature measuring device |
| CN109061575A (en) * | 2018-09-07 | 2018-12-21 | 北京大汉正源科技有限公司 | A kind of laser radar reception circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20190107 |